Is Inngest or Prefect better?

Neither clearly leads. Inngest starts at Free and Prefect at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.

Which is cheaper, Inngest or Prefect?

Inngest starts at Free and Prefect at Free.

Does Inngest or Prefect run on more platforms?

Inngest runs on Web. Prefect runs on Cloud, Self-hosted, VPC.

Can I use Inngest for free?

Both have a free tier, so you can try either at no cost before committing.

What is Inngest best used for?

Inngest is most often used for handling unpredictable llm behavior with fine-grained error control, retrying failed workflow steps independently without restarting, rate limiting per-tenant usage on shared infrastructure, processing thousands of webhooks per event with replay capability. Of those, handling unpredictable llm behavior with fine-grained error control and retrying failed workflow steps independently without restarting are not what Prefect is typically brought in for.

What can Inngest do that Prefect cannot?

Prefect covers Python function decorators, Automatic resilience, Flexible deployment, Observable execution.

Automation Integration · head to head

Inngest vs Prefect

Inngest

Automation Integration

Unbreakable Agents. Invisible Infra.

From: Free
Rated: -

Full review Website

Prefect

Automation Integration

Python-first workflow orchestration that heals itself

From: Free
Rated: -

Full review Website

The short version

Each has a real cost: Inngest hobby plans pause execution once free quota exhausted; upgrade required to continue; Prefect limited to Python-based workflows; other languages require API calls

Where they differ

Only the attributes on which Inngest and Prefect actually diverge.

Attributes where Inngest and Prefect differ
Attribute	Inngest	Prefect
Pricing model	freemium	Freemium with per-user and usage-based tiers
Platforms	Web	Cloud, Self-hosted, VPC

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (Automation Integration).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Inngest

Nothing recorded that Prefect does not also cover.

Only in Prefect

Python function decorators
Automatic resilience
Flexible deployment
Observable execution
Multiple scheduling
Webhooks
Open-source core

What people use each for

The jobs each tool is most often brought in to do.

Inngest

Handling unpredictable LLM behavior with fine-grained error controlnot Prefect
Retrying failed workflow steps independently without restartingnot Prefect
Rate limiting per-tenant usage on shared infrastructurenot Prefect
Processing thousands of webhooks per event with replay capabilitynot Prefect
Persisting state across serverless function invocationsnot Prefect

Prefect

Orchestrating data pipeline workflows in Pythonnot Inngest
Managing ML model training and inference jobsnot Inngest
Building ETL and event-driven automationnot Inngest
Monitoring and alerting on workflow healthnot Inngest

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Inngest

Hobby plans pause execution once free quota exhausted; upgrade required to continue
Pro plan overages carry tiered metering: additional concurrent steps at $25 per 25, span data at $3/GB, scores at $1.50 per 1K, events at $0.50 per 1M

Prefect

Limited to Python-based workflows; other languages require API calls
Hobby free tier severely limited for production use
Team plan billing per user scales quickly with team size
Less visual workflow builder compared to some competitors
Smaller ecosystem of pre-built connectors than alternatives

Pricing, plan by plan

Inngest

Free

HobbyFree
- 50k executions/month
- 5 concurrent steps
- 500 MB span data
Pro$99/month starting
- 1M executions included, pay-as-you-go up to 20M
- 100+ concurrent steps
- 5 GB span data ingested
Enterprise$null/custom
- customizable metrics
- 90-day trace retention
- SAML, RBAC, audit trails

Prefect

Free

HobbyFree
- 2 users and 5 deployments
- 500 minutes serverless monthly
- 7-day run retention
Starter$100/month
- 3 users and 20 deployments
- 75 hours serverless compute
- Bring-your-own infrastructure
Team$100/user/month
- 4-8 users per plan tier
- 100 deployments
- 225 hours serverless monthly
Enterprise$null/custom
- SSO and SAML authentication
- Role-based access control
- Multiple workspaces

Which should you pick?

Choose Inngest if

You want to start without paying.

Inngest review

Choose Prefect if

You need python function decorators.
You want to start without paying.
You work on Cloud, Self-hosted, VPC.
You also want automatic resilience.

Prefect review

Questions people ask

Is Inngest or Prefect better?: Neither clearly leads. Inngest starts at Free and Prefect at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Inngest or Prefect?: Inngest starts at Free and Prefect at Free.
Does Inngest or Prefect run on more platforms?: Inngest runs on Web. Prefect runs on Cloud, Self-hosted, VPC.
Can I use Inngest for free?: Both have a free tier, so you can try either at no cost before committing.
What is Inngest best used for?: Inngest is most often used for handling unpredictable llm behavior with fine-grained error control, retrying failed workflow steps independently without restarting, rate limiting per-tenant usage on shared infrastructure, processing thousands of webhooks per event with replay capability. Of those, handling unpredictable llm behavior with fine-grained error control and retrying failed workflow steps independently without restarting are not what Prefect is typically brought in for.
What can Inngest do that Prefect cannot?: Prefect covers Python function decorators, Automatic resilience, Flexible deployment, Observable execution.

Answered from the vendors’ own pages

Inngest: How much does Inngest cost?

Inngest offers a free Hobby plan with 50k executions per month and up to 3 users. Pro plans start at $99 per month with 1M executions included and support for up to 15 users. Additional Pro users cost $10 each. Enterprise plans require custom pricing.

Source

Prefect: What is included in the Hobby free plan?

Hobby includes 2 users, 5 deployments, 500 minutes of serverless compute monthly, and 7-day run retention.

Source

Inngest: Is there a free version of Inngest?

Yes, the Hobby plan is completely free and includes 50k executions per month, 5 concurrent steps, 500 MB span data ingested, 10K scores, 500k events ingested, and support for up to 3 users. Plan changes pause execution once the free quota is exhausted.

Source

Prefect: What is the difference between Starter and Team plans?

Starter is $100/month for 3 users and 20 deployments. Team is $100 per user per month for 4-8 users and 100 deployments.

Source

Inngest: What are the overage costs on Inngest Pro?

Inngest Pro includes 1M executions with additional executions at $0.50 per 1M up to 20M. Span data overages cost $3 per GB, scores at $1.50 per 1K, and events at $0.50 per 1M. Additional concurrent steps cost $25 per 25 steps beyond the included 100+.

Source

Prefect: Can I deploy Prefect in my own infrastructure?

Yes, Starter and higher plans support bring-your-own-compute infrastructure and VPC deployments.

Source

Inngest vs Prefect

Inngest

Prefect

The short version

Where they differ

What each one covers

Only in Inngest

Only in Prefect

What people use each for

Inngest

Prefect

Where each one falls short

Inngest

Prefect

Pricing, plan by plan

Inngest

Prefect

Which should you pick?

Choose Inngest if

Choose Prefect if

Questions people ask

Answered from the vendors’ own pages

Related pages

More on Inngest

More on Prefect

Keep looking

Other head to heads